
<!DOCTYPE html>
<html>
<head>
	<title>五子棋</title>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0,maximum-scale=1.0, user-scalable=no"/>
	<style>
		html,body,section,div,p{
			padding: 0;
			margin: 0;
			font-size: 12px;
		}
		body{
			width: 100%;
			height: 100%;
			position: fixed;
		}
		#chessboard{
			width: 90vmin;
			min-height: 89vmin;
			margin: calc(50vh - 46vmin + 2px) auto;
			background: #f5ca69;
			border: 2px solid #000;
			border-radius: 7px;
			-webkit-box-shadow: .1rem .1rem .05rem rgba(0,0,0,.5),   
                         -.1rem -.1rem .05rem rgba(0,0,0,.5) ;   
    		box-shadow: .1rem .1rem .05rem rgba(0,0,0,.5),   
                         -.1rem -.1rem .05rem rgba(0,0,0,.5) ; 
		}
		#chessboard::after {
		    content: "";
		    display: block;
		    height: 0;
		    clear: both;
		    visibility: hidden;
		}
		#chessboard div{
			width: calc(9vmin - 2px);
			height: calc(9vmin - 2px);
			float: left;
			border: 1px solid #000;
			border-radius: 5px;
		}
		#chessboard div p{
		    width: 97%;
		    height: 97%;
		    margin: 1.5% auto;
			border-radius: 100%;
		}
		.white{
			background: -webkit-radial-gradient(at 35% 35%,#FFF,#CCC,#FFF);
		    background: -o-radial-gradient(at 35% 35%,#FFF,#CCC,#FFF); 
		    background: -moz-radial-gradient(at 35% 35%,#FFF,#CCC,#FFF); 
		    background: radial-gradient(at 35% 35%,#FFF,#CCC,#FFF); 
			box-shadow: .1rem .1rem .05rem rgba(0,0,0,.5);
		}
		.black{
			background: -webkit-radial-gradient(at 30% 30%,#999 -13%,#000 35%,#999 200%);
		    background: -o-radial-gradient(at 30% 30%,#999 -13%,#000 35%,#999 200%); 
		    background: -moz-radial-gradient(at 30% 30%,#999 -13%,#000 35%,#999 200%); 
		    background: radial-gradient(at 30% 30%,#999 -13%,#000 35%,#999 200%); 
			box-shadow: .1rem .1rem .05rem rgba(0,0,0,.5);
		}
		#mask{
			width: 100%;
			height: 100vh;
			position: fixed;
			top: 0;
			left: 0;
			background-color: rgba(0,0,0,.7);
		}
		.conBox{
			display: block;
			width: 300px;
			height: 200px;
			position: absolute;
			top: 0;
			left: 0;
			right: 0;
			bottom: 0;
			margin: auto;
			background-color: #fff;
			border-radius: 3px;
			box-shadow: .1rem .1rem .05rem rgba(0,0,0,.5);
		}
		.conBox h1{
			width: 100%;
			float: left;
			margin: 0;
			line-height: 45px;
			text-align: center;
		}
		.conBox p{
			display: block;
			width: 40px;
			height: 40px;
			float: left;
			margin-top: 40px;
			font-size: 32px;
			text-align: center;
			line-height: 40px;
			cursor: pointer;
		}
		.conBox p:nth-child(2){
			margin-left: 60px;
		}
		.conBox p:nth-child(3){
			width: 100px;
			font-size: 20px;
			cursor: initial;
		}
		.conBox button{
			width: 80px;
			float: left;
			margin-top: 30px;
			margin-left: 110px;
			color: #fff;
			font-size: 14px;
			text-align: center;
			line-height: 28px;
			background-color: #f60;
			border: none;
			outline: none;
		}
		.clear::after{
			content: "";
			display: block;
			height: 0;
			clear: both;
			visibility: hidden;
		}
		.border,
		.borderTop,
		.borderBot
		{
			position: relative;
		}
		.border:after{
			content: " ";
		    width: 200%;
		    height: 200%;
		    position: absolute;
		    top: 0;
		    left: 0;
		    border: 1px solid rgba(0, 0, 0, 0.2);
		    -webkit-transform: scale(0.5);
		    transform: scale(0.5);
		    -webkit-transform-origin: 0 0;
		    transform-origin: 0 0;
		    box-sizing: border-box;
		}
		.borderBot:after{
		    content: " ";
		    position: absolute;
		    left: 0;
		    bottom: 0;
		    right: 0;
		    height: 1px;
		    border-bottom: 1px solid rgba(0, 0, 0, 0.2);
		    -webkit-transform-origin: 0 100%;
		    transform-origin: 0 100%;
		    -webkit-transform: scaleY(0.5);
		    transform: scaleY(0.5);
		}
		.borderTop:before{
			content: " ";
		    position: absolute;
		    left: 0; 
		    top: 0;
		    right: 0; 
		    height: 1px;
		    border-top: 1px solid rgba(0, 0, 0, 0.2);
		    -webkit-transform-origin: 0 0;
		    transform-origin: 0 0;
		    -webkit-transform: scaleY(0.5);
		    transform: scaleY(0.5);
		}
	</style>
	<script>
		window.onload=function(){
			var grid;
			var chessArr = [];
			var timer = 0;
			var lineNum = parseInt(gridNum.innerHTML);
			var box = document.getElementById('chessboard');
			var chessBox = box.getElementsByTagName('div');
			var submitBtn = document.getElementById('submitBtn');

			subBtn.onclick = function(){
				if ( lineNum > 8 ) {
					lineNum--;
				}
				gridNum.innerHTML = lineNum;
			}
			addBtn.onclick = function(){
				if ( lineNum < 14 ) {
					lineNum++;
				}
				gridNum.innerHTML = lineNum;
			}

			//棋盘初始化
			submitBtn.onclick = function(){
				var chessMaxNum = lineNum * lineNum;
				var chessWH = 90/lineNum;
				for (var i = 0; i < chessMaxNum; i++) {
					grid = document.createElement('div');
					grid.style.width = 'calc(' + chessWH + 'vmin - 2px)';
					grid.style.height = 'calc(' + chessWH + 'vmin - 2px)';
					grid.id=i;
					box.appendChild(grid);
					chessArr[i] = 0;

					grid.onclick = function(x){
						var index = x.target.id||x.target.parentNode.id;
						return playChess(index);
					};
					
				};
				mask.style.display = 'none';
			}

			//棋子对象
			function Chess(){
				this.color = 'white';
				this.site = 0;
				this.chessDom = function(){
					var dom = document.createElement('p');
					dom.setAttribute('class',this.color);
					return dom;
				}
				this.ligature = function(arr){
					var whiteChess = arr.map(function(s){
						return (s.color == 'white')?parseInt(s.site):0;
					});
					var blackChess = arr.map(function(s){
						return (s.color == 'black')?parseInt(s.site):0;
					});

					judge(whiteChess,'白子');
					judge(blackChess,'黑子');

					function judge(che,color){
						for (var i = 0;i < che.length;i++) {
							var x = che[i]%lineNum;
							var y = parseInt(che[i]/lineNum);
							if ( x <= lineNum - 5 && y <= lineNum - 5 && che[i] != 0 ) {
								if( che[i+1*lineNum+1] != 0 && che[i+2*lineNum+2] != 0 && che[i+3*lineNum+3] != 0 && che[i+4*lineNum+4] != 0 ){
									alert(color+'获胜!');
									location.replace(location);
									return true;
								}
							};
							if ( y <= lineNum - 5 && che[i] != 0 ) {
								if( che[i+1*lineNum] != 0 && che[i+2*lineNum] != 0 && che[i+3*lineNum] != 0 && che[i+4*lineNum] != 0 ){
									alert(color+'获胜!');
									location.replace(location);
									return true;
								}
							};
							if ( x >= 4 && y <= lineNum - 5 && che[i] != 0 ) {
								if( che[i+1*lineNum-1] != 0 && che[i+2*lineNum-2] != 0 && che[i+3*lineNum-3] != 0 && che[i+4*lineNum-4] != 0 ){
									alert(color+'获胜!');
									location.replace(location);
									return true;
								}
							};
							if ( x <= lineNum - 5 && che[i] != 0 ) {
								if( che[i+1] != 0 && che[i+2] != 0 && che[i+3] != 0 && che[i+4] != 0 ){
									alert(color+'获胜!');
									location.replace(location);
									return true;
								}
							};
						};
					}
				}
			} 

			function playChess(i){
				if(chessArr[i] == 0){
					timer++;
				    chessArr[i] = new Chess();
				    timer%2==0?chessArr[i].color = 'black':chessArr[i].color = 'white';
					chessArr[i].site = i;
					chessBox[i].appendChild(chessArr[i].chessDom());
					chessArr[i].ligature(chessArr);
				}else{
					alert('此处有子!');
				}
			}
			
		};
	</script>
</head>
<body>
	<section id="chessboard" class="clear">
	</section>
	<section id="mask">
		<aside class="conBox">
			<h1 class="borderBot">请选择棋盘规格！</h1>
			<p id="subBtn" class="border">-</p>
			<p id="gridNum" value="10" class="borderTop borderBot">10</p>
			<p id="addBtn" class="border">+</p>
			<button id="submitBtn">确认</button>
		</aside>
	</section>
	<div style="text-align:center;">
</div>
</body>
</html>